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URL Shorteners: Which Shortening Service Should You Use?

URL shortening services are experiencing a renaissance in the age of Twitter. When every character counts, these services reduce long URLs to tiny forms. But which is the best to use, when so many are offered and new ones seem to appear each day? Below, issues to consider and a breakdown of popular services, including recommendations and services to avoid (the new DiggBar being one of these).

To make recommendations, I reviewed various services and how they stacked up in a variety of features. All this got dumped into a spreadsheet, below. You can also view it in full-screen here.

Each column represents a feature. Want to know more about that feature and why it is important? Each is explained below the chart. Green indicates that a particular service gets a good grade for that feature. Red indicates that it is lacking. Not all features are of equal importance, however, so don’t let the occasional red mark make you think a service is lacking. But in general, the more green, the better.

To busy to read the chart or the explanations? There’s a summary of recommended tools at the end of this story. But first, the chart:

301 Redirect

The first column in the chart is for “Redirect.” This is because a top issue to me, and many others, is that a URL shortening service does a “301 redirect” to the full URL. That number stands for the code a web server issues to a browser (or search engine) when a URL is requested.

A 301 redirect says that the URL requested (the short URL) has “permanently” moved to the long address. Since it’s a permanent redirect, search engines finding links to the short URLs will credit all those links to the long URL (see the SEO: Redirects & Moving Sites section of the Search Engine Land members library for more about redirection).

In contrast, a 302 redirect is a “temporary” one. If that’s issued, search engines assume that the short URL is the “real” URL and just temporarily being pointed elsewhere. That means link credit does not get passed on to the long URL.

In short, if you’re hoping that links you tweet will generate link credit for your web site, you want a service that issues a 301 redirect. Also keep in mind that while 301s might be issued today, a shortening service could shift to 302 directs at any time (and if they do, I hope scorn gets poured upon them).

Do tweeted links really matter that much? I mean, it’s not like search engines are really finding these URLs, right?

That brings back 27 links to a story that I twittered last week. Lots of those links are on Twitter pages themselves, from when other people retweeted my link. But some come from FriendFeed, and still others come from places like BusinessWeek, which embeds links from Twitter for various topics.

The bottom line is that when you tweet a link, you have no idea where or how it will spread — but if it does spread, why not ensure your site gets the right credit for it? So get a 301 redirect!

On the chart, you can see which services do 301 redirects (good — thus colored green) versus 302 redirects (bad — thus colored red). One service (Twurl/Tweetburner) issues a 303 code. I have no idea how search engines treat this, but it’s so unusual that I’ve flagged it as red (Google’s Matt Cutts told me he thinks Google may treat 303s as 302s).

Finally, want to test things for yourself? Rex Swain’s long-standing HTTP Viewer is an excellent tool. Enter the short URL into the URL box, untick the “Auto-Follow” box and submit. Then look to see what code is reported.

Tracking

Have people been clicking on your URLs that you tweet? A service like Google Analytics can show you traffic that comes from Twitter, but you might want to drill down further than it allows. A number of URL shortening services provide tracking stats, which in turn range from basic to extensive reporting.

A future article will look at the type of tracking involved. But all things being equal, it makes sense to select a service that provides tracking. Why not have the data if you want it?

To me, tracking is an important feature. That’s why services that offer it get a green for good on the chart and those lacking it a red for bad.

Stability

Nothing is more annoying than tweeting a link using a URL shortener and then having people tweet back at you that the link isn’t working, because the URL shortening service has gone down.

Unfortunately, I don’t know of any regular metrics of which service is the most stable, so there’s no stability column in the mega chart above. My assumption is that those gaining funding and partnerships are more likely to solve capacity problems than others.

Aside from short-term stability issues, there’s also a long-term consideration. What happens if a service shuts down, as happened to Zi.ma? If a service goes down permanently, it takes down all those links that were passing along credit to your site with it. With Zi.ma, fortunately Kl.am was able to keep those links working. But they could have been gone forever.

TinyURL has been around since 2002, so it has some stature in the space. Newer service Bit.ly recently raised $2 million in funding, which suggests it has some people willing to sink money into its future. But neither stature or investment is a guarantee of long-term success.

Twitter Client Support

In lieu of good stability stats, my own preference is to fallback toward depending on services with a lot of use or which are built into Twitter clients. These receive lots of traffic, which should translate into someone deciding they’re valuable, even if the exact revenue models are still being worked out.

Twitstat is one service that reports client metrics (hat-tip to Mashable on spotting that resource). The top current top clients:

Twitter [web]: 28%

Tweetdeck: 13%

Twitterfeed: 6%

Twhirl: 5%

Tweetie: 5%

So which clients provide support for which URL shorteners? The mega chart summarizes this above. Any service that’s a default in one or more clients is colored green for good. Red indicates they have no partnerships (or are losing their TweetDeck one).

Twitter itself is used as a “client” by many people to publish their Tweets. If you give it a URL of 30 characters or longer, Twitter will shorten it using TinyURL. Unfortunately, Twitter doesn’t allow for this default choice to be changed. I hope that will happen in the future. Until then, you can always use another service to manually shorten your URLs.

The mega chart shows those that are going away (flagged as “going”), those that are staying (these just say “TweetDeck”) and the one about to be added (flagged “coming.”) Bit.ly is the default choice, so it’s noted that way.

Twhirl is another desktop client that I personally use, and it’s fourth on the popularity list above. The latest version for uses the new DiggBar service by default. This is not recommended for use, as explained further below.

Twitterfeed isn’t really a client. It’s designed to automatically feed blog posts into a Twitter account. However, you can choose from a variety of URL shorteners rather than go with the default choice of TinyURL. Changing to a service that provides tracking seems a wise choice.

Tweetie is an excellent Twitter client for the iPhone. Unfortunately, it offers no URL shortening support (and since the iPhone absurdly doesn’t offer copy-and-paste yet, there would still be issues even if it were offered). However, in comments from my survey below, someone said that Bit.ly is integrated into Tweetie. If it is, I’ve yet to figure out where and how.

Another issue for many is just how small you can make a URL. A first step in keeping URL size down is if the domain used by the URL shortening service itself is small. For example, popular service TinyURL has the domain of tinyurl.com, 11 characters. But service is.gd comes in at only 4 characters. TinyURL will always be at a disadvantage over is.gd because there’s simply no way for it to reduce its domain name.

Of course, after the domain name comes the remaining part of the URL, the “path” portion or what on a normal web site would be the page name. The path size for services typically ranges from 3 to 6 characters. If you really want to stay small on character counts, go with a service that uses a short 3 character path.

Keep in mind that over time, even services offering short paths won’t be able maintain this. That’s because there are only so many 3 character combinations that can be used (is.gd has a nice tutorial about this). When those have all been used, a shortening service either has to recycle old combinations or expand the number of characters used.

Recycle URLs?!!! Could that happen? Potentially, yes — a service could reissue a URL that’s been used before. They don’t seem to do this, however. Unfortunately, only one of the sites I visited explicitly said that recycling was not done — is.gd. While the others almost certainly don’t recycle, they should be clear about this.

Overall, if it’s essential to save every character, go with a service that currently uses fewer characters for the path. Otherwise, seek out a service that keeps its domain as short as possible. But as I’ll get into, a short domain doesn’t take away from other issues you may wish to consider.

On the chart, domains that are 15 characters or shorter are shown in green for good; red means they have 16 or more. Characters include the http:// prefix and the trailing / before the path. Note that with Snurl, it produces a longer snurl.com URL from within Twhirl but on the site itself, it uses a shorter sn.im domain. I’ve gone with the shorter figures for the chart.

Further along the chart, you can also see the current character counts for paths generated at each service — and next to that, total characters for short URLs. If you’re after the very smallest URL possible, look at the total characters column. However, I’ve not given any “good” or “bad” credit for either of these columns because they will change (I went with orange to indicate a neutral opinion). Any service offering short 3 or 4 character paths now will, if it becomes popular, grow to using 5 or 6 character paths.

If you’re thinking long-term, especially with tracking in mind, then looking at the total count is the wrong figure, as that will change over time. Instead, the domain character count is more important.

Custom Or Vanity URLs

Typically, URL shorteners make up a random path for your URLs — those /6Q8 or /qu03e3 and other boring sounding names you’ve seen. Some of them allow you to override this, so that your path can have a “custom” or “vanity” ending. That means you can have a custom name for your URL, such as these that lead to Search Engine Land:

I think it’s a nice feature for a service to allow custom naming, so those that provide this are marked green on the chart — those that don’t, red. And here’s a tip. Once a particular custom name is taken, it’s gone. If you want to protect your brand, you might register any vanity URLs you’d really like to have.

Sharing

Some URL shorteners share the most popular or interesting URLs that are being clicked on through their services. Potentially, this is a benefit to using a particular service. It could bring you added traffic. However, in my survey, few of the sites offering sharing did it in a way (or seemed to have enough traffic) to make this a compelling feature choice. It’s a minor benefit, not a huge one, at the moment. That’s why regardless if it’s offered, all services are colored orange.

Tweetburner shows most popular URLs in last hour and ones that have gotten the most clicks in the last hour

Short.ie shows most popular and active users

Eweri is supposed to show popular URLs and latest ones on its home page, but this hasn’t worked for two days running, so I didn’t credit it on the chart.

Country Of Origin

Country of origin (IE, where the domain name is registered, not where the service is based) is something to consider, when it comes to URL shortening services. In order for some of these services to get such short domain names, they’ve registered names in countries off the usual .com beaten track. Armenia, Libya and South Georgia Island are just some of the places used. To date, I don’t know of any country that has a particularly bad track record when it comes to domain names. So this is likely a minor worry. I’ve indicated countries on the chart but marked them all with orange, for neutral.

Handling Parameters

Ever want to retweet a search on Google? Some URL shorteners can’t handle parameters in a URL, all that stuff with ? and & symbols. Consider this search for movie times:

Put that into some URL shorteners, and they break — they’ll ignore everything from the ? symbol onward and just point people at the Google home page. So when selecting a service, this is another factor to consider.

In my testing, only Short.ie came up as unable to handle parameters.

What We Use

In deciding which URL shorteners to review, I focused on those that were built into the clients. As I’ve explained, this suggests they’ll have some stability.

There are also some metrics on which are most used such as from Tweetmeme (ff.im is listed there, but that’s simply FriendFeed’s internal shortener and not something that I can see you can manually use. Heavy use is another sign of stability, especially if people are actively turning to a service that doesn’t have the natural advantage of being built into a client.

I also ran a short survey this week, asking people on Twitter what they use. I received 233 responses, which might help people when making decisions among the choices summarized at the end of this article.

TinyURL was most used by 31.1% of those answering (people could choose more than one service). After that, bit.ly was at 25.2%, then is.gd at 9.9%, then cli.gs at 8.7% and tr.im at 5.3% — all others were less than 5%.

I also asked a basic question of why people use the services. Responses were:

Half (49%) said it was to save space. Only 16% said they wanted tracking, though 25% said they wanted both. Among reasons for “other” were to preserve branding or that it was easy (as these are built in).

I also let people leave open comments about why they use these services, what they’d like to see from them or any other thoughts. I’ve grouped them below by common themes:

Comments About Particular Services

I use bit.ly by choice when I tip to techmeme so i can track. Also really like bit.ly analytics and the fact it tracks twitter/friendfeed mentions/clicks. tinyurl is twitter default – not sure why. twitter should auction url shortners and get some revenue – that will get rid of tinyurl. It is 11 chars long vs bitly’s 6. ff.im is the only choice to shorten when posting from FriendFeed to twitter. Wish they offered bit.ly so I could track clicks. Also dont like URLs that frame content and put ads.

The only problem with bit.ly is that they often use the lower case L and the uppercase I which look very similar.

I like the toolbar button that posts to twitter automatically in adjix. Don’t like the ad part though… need to find a different one that has the good feature without the bad.

Is.gd has the shortest URLs I’ve seen, but sometimes name of the linked site gets garbled (which could be misleading to readers) when I use it on PowerTwitter. The redirects always seem to work though.

Kl.am is great but I wish I had more control over deleting my urls when I don’t need them anymore. Seems like it would be an easy thing to add in there.

I like the custom URL and tracking features for tr.im. Hear good things about bit.ly as well.

Tinyurl is the only one I remember when I want to shorten a link for twitter.

Tr.im works for me because it has tracking, twitter integration and a firefox plugin. it also just works, haven’t had any issues with it.
Tweetie’s bitly integration in the iphone app is great!

Twitering from tr.im is useful as it’s one less copy-and-paste step. I wish it would give the last couple of tweets and then you could easily make a traceable reply.

While I haven’t given this decision much thought, I appreciate TinyArrows’ bizarre characters and tiny, tiny urls.

Concerns Over Malicious Links

You have to trust the person because you can’t trust the link.

I have concerns about malicious links being hidden in shortened links – got bit by a joke link this week. Not a big deal in this case but could it be a prob?

Frustrating that you have to click through usually to figure out what the link is going to. Can’t get a clue from the domain name.

I know it is unavoidable, but I do not like not being able to tell what website I am about to visit or, in addition, not seeing the link for memory purposes. I know they are needed for twitter because of space issues, but do not like them when space is not an issue. IE when people post them in blogs or general articles etc. In those cases, use the full URL. I remember sites by seeing the URL’s and when I cannot see them and all is there is the shortened URL, the link becomes meaningless to me. IE I can never remember where I read or saw something if I have not clicked on a link with the site name in it. Maybe just me, but feel they should only be used for space considerations.

I love them for saving space, but not knowing where they will redirect me is annoying at times, when I find the time I’ll write a firefox extension or greasemonkey script to change the title attribute to contain the real url by decoding or resolving the shortened urls, like @mattcutts was on about earlier today

It would be great if the page content was somehow reflected in the shortened URL so that people not used to seeing shortened URLs have confidence they are going to a relevant/safe site. No idea how this would work!

The problem w/ shorteners is the reader doesn’t know where the link will go to (e.g. YouTube, Slideshare, company site, etc.).

Concerns Over Death Of Links If Service Dies

A lot of links could die when these services die.

I’m just afraid one of them is going to disappear, and break all my old links … but tinyurl is too long to use with Twitter, IMO.

I’m worried the services will die and leave my shortened URLs as broken orphans. If I’m going to switch from the market leader, I want some kind of long-term commitment.

I’ve discovered that I like using my own short url service for important links – like affiliate links on my own sites – ones that I control. If a shortening service goes down, I don’t want my important links to be at the mercy of that site, but I do want the ability to track the links and get stats. So, I’m using my own service for those important links. For everything else – just sharing of news and interesting links – I use cli.gs. It rocks.

They’re great. Had no idea there were so many of them. Afraid of the day they will start requiring a fee. Also wonder if a URL you create with it ever expires or if it’s a permanent thing.

What if they (the URL shortening service) go out of business? Jill Whalen brought up the good point of how an out of business service kills all of that archived traffic potential

Will the Internet fall over if TinyURL implodes?

Wishlists & Feature Requests

As a bonus, i especially like to capacity to deactivate/delete links.

I don’t know why I don’t get google-analytics like tracking capability with bit.ly. Also wish I could use my own custom domain name on top of one of these. Finally I wish they would correlate with search.twitter.com re-tweets (RT) to see if one of my links is going viral.

I wish there was a url shortener gadget for igoogle that could give you a short url without leaving the page (opening another tab). I prefer bit.ly to tinyurl.

I’d love for del.icio.us to create a shortcut url for anything I (or anyone else) bookmarks so I could combine social bookmarking and sharing.

I’m looking for good analytics, including city – level location tracking. I would also love for it to be mobile internet compatible (not iphon), so I can check the stats while I’m out. And 301 redirects is a must.

I’m wondering about integrating them with Google Analytics. Have some ideas, not sure if already being done…

Integration w/in web browsers.

There’s so many to choose from, with no real differentiation so I use what’s handy. I’m waiting for something with better tracking to measure with the URL shortening, and using the Google URL builder (or other tracking code) if I really want to track something.

They are voodoo. No longevity, fragmentation of brand, cannot trust what is behind a shortened URI.

We need wordpress plugins!!!!!

Wish there was a search box tool for firefox so I could just throw the long url in there and get it generated

Wish Twitter offered the service automatically.

Would like to have tracking from within twitter or tweetdeck

Some Other Assorted Comments

“Had an interesting experience the other day where my AV [antivirus program] blocked a bit.ly shortened URL (cant remember what it was linking to but It was a URL linked in a tweet from someone Im following – could have been you!). This was the first time that this has happened, although I dont run my AV all the time (shameful, I know) so not seeing it before might have been a timing thing. If this is a widespread pattern I can see this as a pretty big roadblock for the adoption of twitter by the large population of only semi tech oriented internet users that are likely to become the second wave of twitter-ers. It is highly possible that they will not being willing to whitelist a url-shortening service through their firewalls.

I use url shortening services for space saving, and tracking. I’m not going to tweet or try to IM urls that are 87597893 characters long. I was using tinyurl always until I tried bit.ly yesterday and realized how sexy its analytics were! I haven’t tried the digg bar yet, but I’m curious if they have built in analytics. I think any of these services that continue to innovate and provide functionality besides just a short url will become rather valuable.

I will start using one with stats as soon as I decide on which service. I’m seeing where short urls with stats are becoming necessary.

I’ll join the list of people saying “should pass link equity”. also i like to customize the URLs when posting links to my own content, but rarely do so for any reasons other than readability.

Maybe I am old school but they seem somewhat unofficial. www.cnn.com/top-news-of-the-day has the banding a short url will never have

Space savings very important, especially when including more than one URL and/or tags in a tweet. Don’t like the ones that frame the resulting page. Haven’t used a tracking URL shortner since zi.ma went under. Would like to find another one to use occasionally.

Tracking analytics is a must for me, as is a 301. I really like the real-time GUI of bit.ly’s service.

“Stats are nice but, Do we really need 50 companies developing what is basically a 301 redirect?”

Terribly useful in a 140 character world and for tracking, and ultimately think that major services will want to offer URL shortening directly

The minute I tweet I know the reach of my “ad.” Once I see how many clicks I get I can calculate a basic CTR.

Thought about making my own for personal use…

Working on making one for my own site to create branding.. why have tinyurl displayed when it could be youfoundjake.com displayed..yeah, i miss some extra characters, but worth it branding wise..

You made it! After reviewing the various features, here’s my rundown on recommended services:

bit.ly: It offers all the key features you’d want in a service, with nice stats that show number of clicks over time, what sites are referring traffic to your twitted URL, locations clicks are coming from and Twitter conversations using the URL. It’s also the default in three of the four major clients — or three of the major clients, if you exclude Twitter itself.

[NOTE: AUGUST 2009, BIT.LY IS THE DEFAULT NOW IN TWITTER, ANOTHER STRONG REASON TO CONSIDER IT].

tr.im: Offers all that bit.ly does other than not being built into Twirl. Tweetdeck support is coming soon. Stats are nice. Bit.ly perhaps offers more drilldown on the referrer front, from my fast review. Remember, a more in-depth review of tracking stats will come in the future.

[NOTE: AUGUST 2009, TR.IM ANNOUNCED IT WAS CLOSING, POSTING THIS NOTE ON ITS WEB SITE AS OF AUG. 9

tr.im is now in the process of discontinuing service, effective immediately.

Statistics can no longer be considered reliable, or reliably available going forward.
However, all tr.im links will continue to redirect, and will do so until at least December 31, 2009.
Your tweets with tr.im URLs in them will not be affected.

We regret that it came to this, but all of our efforts to avoid it failed.
No business we approached wanted to purchase tr.im for even a minor amount.

There is no way for us to monetize URL shortening — users won’t pay for it — and we just can’t
justify further development since Twitter has all but annointed bit.ly the market winner.
There is simply no point for us to continue operating tr.im, and pay for its upkeep.

We apologize for the disruption and inconvenience this may cause you.

LATER, TR.IM SAID IT WOULD CONTINUE OPERATING AND WOULD BE COMMUNITY-OWNED. PERHAPS IT WILL THRIVE GOING FORWARD, BUT THE INITIAL AND DRAMATIC ANNOUNCEMENT OF CLOSURE GIVES ME PAUSE ABOUT ANYONE USING THE SERVICE, IF THEY’RE CONCERNED ABOUT LONG-TERM STABILITY]

[NOTE: Cli.gs announced in October that it would be closing. See also discussion on Techmeme].

cli.gs: Offers the same as the others above, though it is not built into either of the major clients TweetDeck or Twhirl. You do get TweetFeed support. Stats include showing which search engines have spidered your links. There’s a nice “social media mentions” section that show clicks coming off My Yahoo, FriendFeed, Google Blog Search and others.

More Choices

Snipurl / Snurl / Snipr / Sn.im: You kind of want them to pick a name and settle on it (like Sn.im). The service is currently in three clients, but it’s to be dropped from TweetDeck. Within Twhirl, it also uses the long Snurl.com domain. If you want sn.im URLs, you have to go outside the client to make them. Stats are simply the number of clicks — it’s not in the same class as services above. Finally, ZoneAlarm flagged it as spyware. It’s not, but that’s something to consider in case your visitors are running that software and trying to click on your links.

budURL: Being dropped from TweetDeck. Stats look extensive, if you want to pay. One of the longest domain names of any service.

Short.ie: Originally I had this down as not recommended, as it issued a 302 redirect. They got in touch with me and said not so! I tested again, and they are issuing 301s. They also provide custom URLs –I missed that. Both have been updated. Finally, they say that Twitterfeed support is coming. That with basic stats make them a nice alternative choice. However, they still can’t handle URLs with parameters (I tested that again, and it’s still an issue).

kl.am: Not built into any clients and the stats are fairly rudimentary.

POPrl: Semi-basic stats, being dropped from TweetDeck. No custom URLs.

idek.net: Very basic stats only, being dropped from TweetDeck. No custom URLs.

Choices Without Tracking

Don’t care about tracking? Then either of these are options to consider:

TinyURL: The default choice for Twitter, built into TweetDeck and Twitterfeed. But the longest domain of any of the popular services. ZoneAlarm also flagged it as spyware — as with Snipurl, this could cause issues for your visitors.

Not Recommended

The services below don’t do 301 redirection. That’s a recommendation killer, to me:

lin.cr: Originally, I had lin.cr on my list, because it was included with TweetDeck. But I was shocked when I tested it — so much so that I won’t even link to the service.

Rather than doing a 301 or 302 redirect, lin.cr spits out a 200. That’s server code for “OK,” or file has been found. In other words, lin.cr is telling browsers (and search engines) that your URL is actually located on their server.

But how does it redirect? It uses a meta refresh tag set to 0, which might be interpreted as either a 301 or 302 redirect, depending on the search engine. That forwards humans to a new page — but by loading up its own page, it also generates a pop-under paid ad using JavaScript. Meanwhile, search engines that can’t or don’t execute JavaScript get shown a different page, one that appears to have a paid link on it.

DiggBar: Just launched this week by social news site Digg, DiggBar seems at first glace to be a URL shortener. It does shorten URLs. You don’t even need to visit Digg to use it. You just enter a URL after the Digg.com domain to shorten it. For example, do this:

Sounds cool, especially because it puts tools for those who are really into Digg at the top of your page, such as the ability to read comments from Digg about your page (if it has been submitted there) or the ability to Digg the page you’re on.

The fun stops there. Like lin.cr, it does a 200 code. That means the page is actually on Digg itself — they’re making a page with the DiggBar and pulling in your content without permission into a frame. That’s not illegal, but it’s a tactic that died off years ago. It also means that if you use the Digg short URLs, none of the link credit passes to your page. It’s all kept with Digg.

There’s no need for you to give Digg all your link credit. If you want to shorten your URLs, use a service that does a 301 redirect.

By the way, if you clicked on the short DiggBar example above, you would have seen the DiggBar load on top of a Search Engine Land page briefly, then disappear. This is because we use a frame busting script that says:

I think Twitter and those who build Twitter clients have some responsibility in the URL shortener choices they offer. In particular, I think they should review carefully what they build into their clients and also allow users to add their own custom choices, if they so choice. In particular:

Twitter: TinyURL is ironically the longest domain name of all the URL shorteners. Let Twitter users have an account option to use another shortener, if they so choose. It would also be nice if URLs could be twitted without counting against the Twitter character count at all. Then we wouldn’t have to worry about all this URL shortener madness.

Twhirl: I’m hugely disappointed that the client I use and love added the non-shortener of Digg within a day of it being released plus made it the default choice. Was there no review of what the DiggBar actually does? And why make it the default over better choices?

TweetDeck: Similar to Twhirl, was there no review of something like lin.cr being made a choice for TweetDeck users, the vast majority of whom would not assume it was generating pop-under ads? It’s being dropped in the near future. Let’s hope those that remain are regularly checked.

Further Resources

In working on this article, I came across an number of other articles that you might wish to check out:

on url shorteners – From Delicious founder Joshua Schachter, covers a variety of issues with URL shorteners and why they might be bad for the web, with some suggestions for improvements. Also see discussion on Techmeme. Again, if Twitter were to simply not count URLs against a tweet’s character count — or provide its own shortener — some of these concerns would go away.

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